This title includes a number of Open Access chapters.This volume includes the latest research into the diseases that affect non-vascular plants. The chapters bring to light the most recent studies of pathogen identification, disease etiology, disease cycles, economic impact, plant disease epidemiology, plant disease resistance, how plant diseases affect humans and animals, pathosystem genetics, and management of plant diseases. The information provided here helps readers to stay current with this field's ongoing research and ever-developing knowledge base.